Question Detail

ZOO 101 ZOO 101 Past Questions Objective Question
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Question

Assertion (A): Spontaneous mutation involves base pair substitutions during DNA replication. Reason (R): It is a temperature sensitive mutation and changes the base pair.
Options
A Both A and R are individually true and R is the correct explanation of A
B Both A and R are individually true but R is not the correct explanation of A
C A is true but R is false
Correct Answer
D A is false but R is true
Correct Answer

Option C is the correct answer.

Detailed Explanation

Assertion A is true: Spontaneous mutations can arise from base pair substitutions during DNA replication due to tautomeric shifts, replication errors, or depurination. Reason R is false: Spontaneous mutations are not inherently temperature-sensitive mutations. Temperature sensitivity is a specific property of some mutant alleles (conditional mutations) that are expressed only at certain temperatures. Spontaneous mutations are not defined by temperature sensitivity.

Hint

Distinguish between the causes of spontaneous mutations and the concept of conditional (temperature-sensitive) mutations.

Question Info

Course: ZOO 101
Topic: ZOO 101 Past Questions
Type: Objective
Difficulty: Not specified
Question 909 of 2214
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